1. Syntheses, characterizations and crystal structures of four zinc(II) and cadmium(II) complexes constructed by ligand bearing poly-coordination atoms
- Author
-
Haifang Zhang, Wenyue Wang, Zifeng Li, Zongpei Zhang, Guangjian Mei, and Gang Li
- Subjects
Denticity ,Chemistry ,Ligand ,Hydrogen bond ,Supramolecular chemistry ,chemistry.chemical_element ,Crystal structure ,Zinc ,Inorganic Chemistry ,Crystallography ,Materials Chemistry ,Side chain ,Chelation ,Physical and Theoretical Chemistry - Abstract
Treatment of 3-(4-carboxyphenylhydrazono)pentane-2,4-dione (HL) with transition metal ions afforded four novel complexes, [Zn(L)( μ 2 -OOCCH 3 )(H 2 O)] n ( 1 ), [Zn(L) 2 (MeOH) 4 ] ( 2 ), {[Cd 4 ( η 2 -L) 4 ( μ 2 - η 2 -L) 4 (H 2 O) 4 (MeOH) 2 ]·MeOH} ( 3 ) and [Cd( η 2 -L)( μ 2 - η 2 -OOCCH 3 )(H 2 O) 2 ] n ( 4 ). Their crystal structures have been characterized by single-crystal X-ray crystallography. In polymer 1 , the acetate anions bridge the Zn(II) ions forming an infinite one-dimensional (1-D) chain with L − units acting as monodentate ligands in the side chain. In mononuclear complex 2 , two L − ligands act as monodentate fashion to coordinate to the Zn(II) ion. In its solid-state structure, [Zn(L) 2 (MeOH) 4 ] groups are joined together by hydrogen bonds forming a three-dimensional (3-D) supramolecular network. In tetranuclear complex 3 , four Cd(II) ions are linked by four μ 2 - η 2 -L − ligands, and chelated by another four L − ligands, respectively. In polymer 4 , the acetate anions bridge the Cd(II) ions leading to a 1-D chain containing chelating L − units in the side chain.
- Published
- 2010